Verified ComparisonLast updated: 18 April 2026
Hexarelin vs MK-677
Hexarelin is a potent peptide GHS-R agonist requiring injection. MK-677 is an oral non-peptide ghrelin mimetic. Each offers different practical advantages for research.
Hexarelin
GH Secretagogue
4.1/ 5
A−
MK-677 / Ibutamoren
GH Secretagogue
3.9/ 5
B+
Editor's note
Hexarelin is potent but injectable; MK-677 offers oral convenience.
| Criterion | Hexarelin | MK-677 / Ibutamoren |
|---|---|---|
| Route | Subcutaneous injection | Oral |
| Potency | High | Moderate |
| GH release | Robust | Sustained, dose-dependent |
| Selectivity | Moderate | Variable |
| Practical use in research | Injection-based protocols | Oral dosing protocols |
Frequently asked questions
Hexarelin for potency; MK-677 for oral convenience. Research design determines preference.
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